Cabaletta Bio, Inc.
CABA- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001759138
No open-market purchases or sales by Cabaletta Bio, Inc. insiders were filed in the last 90 days; 139 institutions reported holding it in 13F filings for Q2 2026, worth $490.4M in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Cabaletta Bio, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 108
- +14 vs. Q4 2025
- Shares held
- 84.7M
- +12.8M (+17.9%) vs. Q4 2025
- Total value
- $227.5M
- +$70.3M (+44.7%) vs. Q4 2025
- New holders
- 27
- 32 more added
- Sold out
- 13
- 27 more reduced
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting CABA on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 139 | $490.4M |
| Q1 2026 | 108 | $227.5M |
| Q4 2025 | 95 | $166.9M |
| Q3 2025 | 75 | $162.0M |
| Q2 2025 | 86 | $110.7M |
| Q1 2025 | 93 | $50.3M |
| Q4 2024 | 109 | $87.2M |
| Q3 2024 | 120 | $226.7M |
| Q2 2024 | 142 | $380.0M |
| Q1 2024 | 159 | $870.9M |
| Q4 2023 | 128 | $1.10B |
| Q3 2023 | 97 | $622.6M |
| Q2 2023 | 84 | $470.5M |
| Q1 2023 | 72 | $203.9M |
| Q4 2022 | 61 | $183.9M |
| Q3 2022 | 54 | $7.76M |
| Q2 2022 | 55 | $17.8M |
| Q1 2022 | 62 | $36.9M |
| Q4 2021 | 66 | $68.9M |
| Q3 2021 | 61 | $211.3M |
| Q2 2021 | 63 | $135.5M |
| Q1 2021 | 68 | $180.1M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Cabaletta Bio, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| T. Rowe Price Investment Management, Inc. | 11,080,005 | $29.8M | 0.02% | +1,221,748+12.4% | Added |
| Bain Capital Life Sciences Investors, LLC | 9,677,125 | $26.0M | 2.35% | 00.0% | Unchanged |
| Jennison Associates LLC | 8,970,578 | $24.1M | 0.02% | +64,879+0.7% | Added |
| Adage Capital Partners GP, L.L.C. | 8,829,758 | $23.8M | 0.04% | 00.0% | Unchanged |
| Millennium Management LLC | 5,903,281 | $15.9M | 0.01% | +3,166,369+115.7% | Added |
| Cormorant Asset Management, LP | 5,500,000 | $14.8M | 0.75% | +1,100,000+25.0% | Added |
| Vanguard Capital Management LLC | 4,028,991 | $10.8M | 0.00% | +4,028,991 | New |
| Two Sigma Investments, LP | 2,497,917 | $6.72M | 0.01% | +658,118+35.8% | Added |
| BlackRock, Inc. | 2,373,003 | $6.38M | 0.00% | +44,533+1.9% | Added |
| Marshall Wace, LLP | 2,179,818 | $5.86M | 0.01% | +1,220,742+127.3% | Added |
| Renaissance Technologies LLC | 2,036,663 | $5.48M | 0.01% | +514,080+33.8% | Added |
| Qube Research & Technologies Ltd | 1,934,990 | $5.21M | 0.01% | +1,603,765+484.2% | Added |
| Morgan Stanley | 1,408,152 | $3.79M | 0.00% | +64,444+4.8% | Added |
| Opaleye Management Inc. | 1,380,000 | $3.71M | 0.49% | +480,000+53.3% | Added |
| Woodline Partners LP | 1,250,242 | $3.36M | 0.01% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 1,133,245 | $3.05M | 0.00% | +47,429+4.4% | Added |
| Superstring Capital Management LP | 1,066,239 | $2.87M | 2.05% | −1,187,311−52.7% | Reduced |
| Ikarian Capital, LLC | 900,000 | $2.42M | 0.35% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 783,220 | $2.11M | 0.00% | +352,546+81.9% | Added |
| Cantor Fitzgerald, L. P. | 765,000 | $2.06M | 0.07% | +765,000 | New |
| Dimensional Fund Advisors LP | 740,648 | $1.99M | 0.00% | +288,609+63.8% | Added |
| Burkehill Global Management, LP | 700,000 | $1.88M | 0.09% | 00.0% | Unchanged |
| Schroder Investment Management Group | 756,637 | $1.87M | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 606,664 | $1.63M | 0.00% | +190,987+45.9% | Added |
| Vanguard Fiduciary Trust Co | 570,191 | $1.53M | 0.00% | +570,191 | New |
| Gsa Capital Partners LLP | 561,726 | $1.51M | 0.09% | +257,734+84.8% | Added |
| KVP Capital Advisors, LP | 505,431 | $1.36M | 1.02% | 00.0% | Unchanged |
| State Street Corp | 469,978 | $1.26M | 0.00% | +44,500+10.5% | Added |
| Price T Rowe Associates Inc | 442,277 | $1.19M | 0.00% | −651,682−59.6% | Reduced |
| Raiffeisen Bank International AG | 450,000 | $1.11M | 0.02% | 00.0% | Unchanged |
| Almitas Capital LLC | 337,391 | $907.6K | 0.21% | −50,100−12.9% | Reduced |
| Bank of America Corp | 269,257 | $724.3K | 0.00% | +254,865+1,770.9% | Added |
| Bridgeway Capital Management, LLC | 267,372 | $719.2K | 0.01% | +136,697+104.6% | Added |
| Diametric Capital, LP | 262,831 | $707.0K | 0.19% | +262,831 | New |
| Jane Street Group, LLC | 248,594 | $668.7K | 0.00% | −413,555−62.5% | Reduced |
| Wellington Management Group LLP | 247,659 | $666.2K | 0.00% | +247,659 | New |
| Point72 Asset Management, L.P. | 246,615 | $663.4K | 0.00% | +189,967+335.3% | Added |
| Boothbay Fund Management, LLC | 243,445 | $654.9K | 0.02% | 00.0% | Unchanged |
| Northern Trust Corp | 238,442 | $641.4K | 0.00% | 00.0% | Unchanged |
| 683 Capital Management, LLC | 225,000 | $605.3K | 0.06% | −163,562−42.1% | Reduced |
| Invesco Ltd. | 192,383 | $517.5K | 0.00% | +3,188+1.7% | Added |
| D. E. Shaw & Co., Inc. | 189,412 | $509.5K | 0.00% | +189,412 | New |
| Hudson Bay Capital Management LP | 161,726 | $435.0K | 0.00% | +22,997+16.6% | Added |
| Brevan Howard Capital Management LP | 149,721 | $402.7K | 0.00% | +149,721 | New |
| Squarepoint Ops LLC | 144,681 | $389.2K | 0.00% | −4,413−3.0% | Reduced |
| American Century Companies Inc | 108,319 | $291.4K | 0.00% | +49,542+84.3% | Added |
| ExodusPoint Capital Management, LP | 105,985 | $285.1K | 0.00% | +105,985 | New |
| Graham Capital Management, L.P. | 101,688 | $273.5K | 0.01% | −49,763−32.9% | Reduced |
| Barclays PLC | 97,792 | $263.1K | 0.00% | −122,904−55.7% | Reduced |
| Nomura Holdings Inc | 95,512 | $256.9K | 0.00% | +95,512 | New |
| Letko, Brosseau & Associates Inc | 90,475 | $243.4K | 0.00% | 00.0% | Unchanged |
| Quadrature Capital Ltd | 87,060 | $234.2K | 0.00% | +20,683+31.2% | Added |
| LPL Financial LLC | 69,575 | $187.2K | 0.00% | +26,960+63.3% | Added |
| TD Asset Management Inc | 66,924 | $180.0K | 0.00% | −21,676−24.5% | Reduced |
| Matauro, LLC | 55,108 | $148.2K | 0.02% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 54,299 | $146.1K | 0.00% | +252+0.5% | Added |
| Omers Administration Corp | 54,100 | $145.5K | 0.00% | −41,300−43.3% | Reduced |
| Charles Schwab Investment Management Inc | 50,824 | $136.7K | 0.00% | 00.0% | Unchanged |
| Stonepine Capital Management, LLC | 50,000 | $134.5K | 0.12% | −121,100−70.8% | Reduced |
| Prelude Capital Management, LLC | 43,416 | $116.8K | 0.01% | +43,416 | New |
| Virtu Financial LLC | 38,703 | $104.0K | 0.00% | +38,703 | New |
| Vanguard Global Advisers, LLC | 35,751 | $96.2K | 0.00% | +35,751 | New |
| Jefferies Financial Group Inc. | 33,442 | $90.0K | 0.00% | −11,683−25.9% | Reduced |
| HRT Financial LP | 33,104 | $89.0K | 0.00% | +33,104 | New |
| Axq Capital, LP | 28,938 | $77.8K | 0.01% | +28,938 | New |
| Schonfeld Strategic Advisors LLC | 28,172 | $75.8K | 0.00% | −1,175,898−97.7% | Reduced |
| Citigroup Inc | 27,473 | $73.9K | 0.00% | −46,301−62.8% | Reduced |
| Mercer Global Advisors Inc | 26,510 | $71.3K | 0.00% | 00.0% | Unchanged |
| Fred Alger Management, LLC | 23,157 | $62.3K | 0.00% | −4,864−17.4% | Reduced |
| Catalyst Funds Management Pty Ltd | 21,300 | $57.3K | 0.01% | +21,300 | New |
| GSB Wealth Management, LLC | 20,000 | $53.8K | 0.01% | +20,000 | New |
| Raymond James Financial Inc | 19,769 | $53.2K | 0.00% | +19,769 | New |
| Clear Harbor Asset Management, LLC | 19,500 | $52.5K | 0.00% | 00.0% | Unchanged |
| JustInvest LLC | 19,390 | $52.2K | 0.00% | −2,994−13.4% | Reduced |
| Private Advisor Group, LLC | 18,025 | $48.5K | 0.00% | +3,300+22.4% | Added |
| Susquehanna Portfolio Strategies, LLC | 17,595 | $47.3K | 0.00% | +17,595 | New |
| Callan Family Office, LLC | 17,434 | $46.9K | 0.00% | −5,141−22.8% | Reduced |
| China Universal Asset Management Co., Ltd. | 17,083 | $46.0K | 0.00% | +1,397+8.9% | Added |
| Jump Financial, LLC | 16,700 | $44.9K | 0.00% | +16,700 | New |
| Winton Group Ltd | 15,300 | $41.2K | 0.00% | +15,300 | New |
| CRA Financial Services, LLC | 15,000 | $40.4K | 0.01% | 00.0% | Unchanged |
| FMR LLC | 12,991 | $34.9K | 0.00% | −54−0.4% | Reduced |
| SummitTX Capital, L.P. | 12,522 | $33.7K | 0.00% | +12,522 | New |
| XTX Topco Ltd | 12,512 | $33.7K | 0.00% | −142,875−91.9% | Reduced |
| Kestra Advisory Services, LLC | 11,750 | $31.6K | 0.00% | +11,750 | New |
| Balyasny Asset Management LLC | 11,154 | $30.0K | 0.00% | −40,398−78.4% | Reduced |
| Dynamic Technology Lab Private Ltd | 10,777 | $29.0K | 0.00% | −56,012−83.9% | Reduced |
| JPMorgan Chase & Co | 7,206 | $17.8K | 0.00% | −2,599−26.5% | Reduced |
| Quadrant Capital Group LLC | 6,495 | $17.5K | 0.00% | +6,495 | New |
| Wells Fargo & Company | 6,000 | $16.1K | 0.00% | +4,000+200.0% | Added |
| Tower Research Capital LLC (TRC) | 5,784 | $15.6K | 0.00% | −24,561−80.9% | Reduced |
| Antipodes Partners Ltd | 5,616 | $15.1K | 0.00% | −11,571−67.3% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 5,021 | $13.5K | 0.00% | +343+7.3% | Added |
| The PNC Financial Services Group, Inc. | 4,600 | $12.4K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 2,907 | $7.82K | 0.00% | +2,907 | New |
| GF Fund Management Co. Ltd. | 2,149 | $5.78K | 0.00% | +258+13.6% | Added |
| Rockefeller Capital Management L.P. | 2,000 | $5.38K | 0.00% | +2,000 | New |
| BNP Paribas Arbitrage, SA | 1,569 | $4.22K | 0.00% | −71−4.3% | Reduced |
| Caitong International Asset Management Co., Ltd | 1,322 | $3.56K | 0.00% | +1,322 | New |
| Russell Investments Group, Ltd. | 939 | $2.53K | 0.00% | 00.0% | Unchanged |